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All Journal Jurnal Ilmu Dasar Jurnal Natur Indonesia Jurnal Kimia Khatulistiwa BERKALA SAINSTEK agriTECH Jurnal Kelautan Tropis Chimica et Natura Acta Indonesian Journal of Pure and Applied Chemistry Abdimas Galuh : Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmiah Berkala: Sains dan Terapan Kimia
Andi Hairil Alimuddin
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Tanjungpura, Jl. Jenderal Ahmad Yani Pontianak, Kalimantan Barat
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Economics, Econometrics & Finance Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Nursing Physics

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Synthesis of Nanosilica from Padas Stone to Reduce The Total Organic Carbon of Palm Oil Waste Shofiyani, Anis; Chitra, Fara; Rahmalia, Winda; Rudiyansyah, R.; Alimuddin, Andi Hairil
Jurnal ILMU DASAR Vol 20 No 1 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (383.996 KB) | DOI: 10.19184/jid.v20i1.8679

Abstract

Padas stone is one of the natural mineral containing 67.5% of SiO2 compounds. In this research, synthesis of nanosilica was carried out by sol-gel method asistanced by 2.45 GHz microwave radiations with low (10%), medium (50%) and high (100%) power at 30 and 60 minutes of contact times. It was analyzed by XRD, BET, FTIR spectrophotometry and SEM. The synthesized silica was then used as absorbent for total organic carbon (TOC) of palm oil waste. The results show that the synthesized silica was a mixture of cristobalite and quartz type minerals according to ICDD No. 00-003-0271 and 01-083-287. The surface area and silicon dioxide contains are 12.174 m2/g and 76.325% for silica without microwave assistance (SiO2-TPMW); 12.796 m2/gand 86.385% for silica with 30 minutes on 10% microwave assistance(SiO2 -MW 10A); 12.735 m2/gand 86.254% for silica with 60 minutes on 10% microwave assistance (MW 10B); 13,659 m2/gand 87.211% for MW 50A; 13,583 m2/g and 86.684% for MW 50B;7.883 m2/gand 57.527% for MW 100A; also 8.752 m2/g and 37.725% for MW 100B, respectively. The use of silica as an absorbent of TOC shows the effectiveness of 62.89% (TPMW); 63.68% (MW 10A); 62.96% (MW 10B); 65.25% (MW 50A); 64.61% (MW 50B); 62.37% (MW 100A) and 61.18% (MW 100B) from the initial TOC of 1520 mg/L. Keywords: synthesis, nanosilica, padas stone, total organic carbon, oil waste.
Anti-Termite Activities of The Bioactive Compounds of Gaharu Culture (Aetoxylon sympetalum) From Maceration Results Using Acetone Solvent Yuniar, Risa; Jayuska, Afghani; Alimuddin, Andi Hairil; Wibowo, Muhamad Agus; Ardiningsih, Puji
BERKALA SAINSTEK Vol 11 No 2 (2023)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v11i2.38015

Abstract

Agarwood is a plant known for its aromatic resin, which is one of the most widely distributed species in Indonesia. This research was carried out in several stages, namely maceration, partitioning, Thin Layer Chromatography (TLC), and termites activity. The test was carried out for 3 days with variations in the concentration of 0% (negative control), 0.1%, 0.2%. 0.3%, 0.4%, 0.5% (w/v), and 0.25% fipronil reagent as positive controls. The crude extract yield of sapwood gaharu aloe acetone obtained was 23,4321% and the partition result of 233,789 grams of crude extract of acetone consisted of n-hexane fraction with a yield of 3.812%, chloroform fraction of 42.205%, and acetone fraction of 43.621%. The results of the phytochemical test showed that aloe vera sapwood contained alkaloid compounds, flavonoids, steroids, terpenoids, phenolics and saponins. GC-MS analysis of the n-hexane fraction showed the number of peaks as many as 55 peaks which may contain 55 compounds in the fraction. The compound with the highest % area was 4-Chloro-6-methoxy-2-methyl quinoline-8-amine (10.33%) followed by stigmasterol compound (5.94%). The results of the termite activity test showed that the most active fraction as an anti-termite was acetone fraction (LC50 0.082%) followed by chloroform fraction (LC50 0.134%), crude extract (LC50 0.144%) and n-hexane fraction (LC50 0.176%)
PROFIL GC-MS DAN BIOAKTIVITAS EKSTRAK MINYAK DAUN CENGKEH (Syzygium aromaticum) TERHADAP ULAT GRAYAK Spodoptera frugiperda (GC-MS PROFILING AND BIOACTIVITY OF EXTRACTS CLOVE LEAF OIL (Syzygium aromaticum) AGAINST FALL ARMYWORMS Spodoptera frugiperda) Sitohang, Mikael; Jayuska, Afghani; Hernowo, Kukuh; Alimuddin, Andi Hairil; Aritonang, Anthoni Batahan
Indonesian Journal of Pure and Applied Chemistry Vol 7, No 2 (2024)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v7i2.77091

Abstract

Clove leaf essential oil can be used as a natural insecticide to control pests. Essential oil obtained by steam distillation produces essential oil with a yield of 1.03%. The essential oil obtained was then analyzed using a GC-MS tool where the aim was to separate the mixture of compounds and identify the compounds contained in clove leaf essential oil. The results of GC-MS analysis of clove leaf essential oil shoved 6 compounds whose similarity was above 84%, where the main compounds were eugenol (74.28%), β-Caryophellene (20.49%), α-Caryophellene (2.32%), Caryophellene oxide (2.26%). The essential oils were then tested for mortality and antifeedant activity against 3rd larva S. frugiperda. Concentrations of 0.1%, 0.3%, 0.5%, 0.7% and 0.9% v/v the essential oil caused 43.44%, 56.66%, 70%, 76.77%, and 86.66% mortality on to tested larva. The probit analysis data the mortality resulted LC50 value of 0.58%. Antifeedant concentrations of 0.37% and 0.58% v/v or equivalent to LC25 and LC50 can reduce 42.41-71.96% of the preferred method and 66.46-86.59% of the non-optioned method.
Synthesis of Biodiesel in Low-Grade Palm Oil using Geopolymer-ZnO Catalyst Nabila, Yaasinta Lafasha; usman, Thamrin; Alimuddin, Andi Hairil
agriTECH Vol 44, No 3 (2024)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.80468

Abstract

This study aimed to synthesize biodiesel (fatty acid methyl ester) from low-grade palm oil using geopolymer-ZnO catalyst. The activity of catalyst was tested by mixing low-grade palm oil and methanol in a mole ratio of 1:10, with varying catalyst concentrations of 1%, 3%, and 5% at a temperature of 67 o C and different time intervals. Subsequently, the progression of the reaction was monitored using thin-layer chromatography (TLC). The results showed that catalyst ratios of 1:0, 1:1, and 1:2 provided complete conversion at concentrations of 3% and 5%. Geopolymer-ZnO catalyst reuse test was carried out using a concentration of 5%, followed by washing with n-hexane. After drying at 100 o C, the sample was reused in biodiesel synthesis. The reuse test findings showed optimum results at 1:2 variation and 2 hours of reaction time with total methyl ester conversion. In addition, the majority of the experiments performed were carried out using a 1:1 variation with a maximum of 3 repetitions, which consistently showed total conversion to methyl ester. Catalyst used was then characterized using FTIR, XRD, and XRF instruments, with the analysis results confirming that it was geopolymer-ZnO. Methyl ester obtained was analyzed using GC-MS, and the findings showed that the main compositions included methyl oleate (47.35%) and methyl palmitate (40.13%).
Thermostability and Photostability of Shrimp Waste Oil Based on Sun Protection Factor Value, Erythema Transmission, Pigmentation Transmission and Free Fatty Acid Content Agustiawan, Deri; Rahmalia, Winda; Alimuddin, Andi Hairil; Prayitno, Dwi Imam; Sayekti, Endah
Jurnal Kelautan Tropis Vol 27, No 2 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i2.22775

Abstract

The high production of shrimp is accompanied by an increase in by-products (cephalothorax, carapace, and tail), which are discarded as waste. Therefore, a solution is needed to convert shrimp waste into economic value products like shrimp waste oil (SWO). SWO contains fatty acids and astaxanthin, which have antioxidant activity to scavenge free radicals, so it can prevent skin damage such as wrinkles and dryness. Due to its fatty acids and astaxanthin content, SWO can be applied as a sunscreen. However, heating and irradiation can degrade bioactive compounds that are beneficial for health. Thermostability and photostability tests are needed to determine the best storage conditions for SWO based on sun protector factor (SPF) values, erythema transmission (%Te), pigmentation transmission (%Tp), and free fatty acid (FFA) content. The yield of SWO obtained was 2.569% from 100 grams of dry shrimp waste weight. Analysis by using FTIR showed the presence of astaxanthin content in SWO, while GC-MS showed that the SWO contains up to 32.66% of hexanoic acid. SWO thermostability and photostability tests showed a decrease in SPF values and an increase in %Te and %Tp as heating and irradiation time increased. This is due to the photobleaching effect. There was no significant change in the FFA value, indicating that SWO is quite resistant to heating and irradiation.
Dukunolide D from the Root of Lansium domesticum Corr. cv Kokosan Suryana, Angela; Alimuddin, Andi Hairil; Rudiyansyah, Rudiyansyah
Chimica et Natura Acta Vol 13, No 1 (2025)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v13.n1.54511

Abstract

Lansium domesticum has three varieties and one of the varieties is kokosan. These plants contain limonoids as the main constituents. Phytochemical investigation of L. domesticum cv kokosan has identified onoceranoids-type triterpenoids and tetranortriterpenoids from the seeds, fruit peels, and bark except for the root. This research described dukunolide D (1) that has been obtained from the methanol extract of the root of kokosan. Methanol root extract was fractioned by n-hexane and dichloromethane (DCM). All fractions including the crude extract were screened for phytochemical test. The DCM fraction was chromatographed in order to obtain compound 1. DART-HRMS of compound 1 showed a positive ion peak at m/z 469.1861 [M+H]+ (calculated 469.1862 corresponding for C26H29O8). The structure of 1 was fully determined by 1D (1H-NMR, 13C-NMR, and DEPT-135) and 2D NMR (COSY, HSQC, HMBC, and NOESY), and by comparison with data from literature.
ISOLASI SENYAWA ALKALOID DARI EKSTRAK METANOL DAGING BUAH Tabernaemontana macrocarpa Jack Wulandari, Adisti Riska; Alimuddin, Andi Hairil; Rudiyansyah, Rudiyansyah
Indonesian Journal of Pure and Applied Chemistry Vol 7, No 3 (2024)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v7i3.77779

Abstract

The community has used Tabernaemontana macrocarpa Jack for traditional medicinal purposes such as toothaches, herpes, scabies, and also as poison on arrowheads. This research aims to isolate and characterize the structure of alkaloid compounds in the methanol extract of Tabernaemontana macrocarpa Jack. Extraction was carried out through maceration using methanol as the solvent. The methanol extract was partitioned using n-hexane, dichloromethane, and ethyl acetate. Fractionation was performed using gravity column chromatography, where silica gel was employed as the stationary phase, and a mixture of n-hexane-dichloromethane and dichloromethane-methanol with increasing polarity was used as the mobile phase. At this stage, nine combined fractions were obtained. Fractions that tested positive for alkaloid compounds were further separated using the preparative TLC method. The resulting isolate was a light yellow powder weighing 4 mg. The isolated compound was further characterized using 1H-NMR spectroscopy. The analysis results from the 1H-NMR spectrum suggest that the isolate is an indole alkaloid compound. Based on the 1H-NMR data, the isolate from fraction seven exhibited chemical shift values consistent with those of taberniacin, an indole alkaloid previously reported from Tabernaemontana divaricata.
Pelatihan Pembuatan Virgin Coconut Oil (VCO) Bagi Kelompok Sadar Wisata Teluk Majantu Kelurahan Sedau Singkawang Selatan Sapar, Ajuk; Zaharah, Titin Anita; Alimuddin, Andi Hairil; Shofiyani, Anis; Gusrizal, Gusrizal; Sayekti, Endah; Rudiyansyah, Rudiyansyah; Usman, Thamrin; Widiyantoro, Ari; Nofiani, Risa; Wibowo, M. Agus
Abdimas Galuh Vol 7, No 2 (2025): September 2025
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ag.v7i2.21033

Abstract

Kelurahan Sedau terletak di wilayah Selatan Kota Singkawang Kalimantan Barat. Daerah Teluk Majantu sebagai lokasi kegiatan Pengabdian Kepada Maysarakat (PKM) berada di wilayah pesisir Kelurahan Sedau. Mata pencaharian utama warganya adalah nelayan namun banyaknya pohon kelapa yang tumbuh di pesisir Teluk Majandi menjadi pontesi sumber daa alam yang dapat meningkatkan perekonomian masyarakatnya. Masyarakat Teluk Majantu sebagian besar bergabung pada Kelompok sadar Wisata (POKDARWIS) yang aktivitasnya tidak hanya tentang pengelolaan wisata tetapi juga pengolahan sumber daya alam menjadi produk yang bernilai ekonomi. Kegiatan PKM diawali dengan orientasi lapangan tim pengabdi ke lokasi kegiatan untuk mengidentifikasi masalah mitra, kesepakatan teknologi yang akan diimplementasikan serta penjadwalan PKM. Sehubungan dengan kegiatan PKM yang telah dilakukan sebelumnya, maka warga kelompok sadar wisata menginginkan ada kegiatan pelatihan pembuatan Virgin Coconut Oil (VCO). Oleh karena itu Tim Pascasarjana Kimia FMIPA Untan berinisiatif melakukan kegiatan PKM di lokasi tersebut. PKM dilaksanakan melalui penyampaian materi oleh tim pengabdi dilanjutkan dengan praktek pembuatan VCO. Setelah pelaksanaan pelatihan selesai, dilanjutkan dengan tahapan evaluasi secara kuantitatif dengan menganalisis hasil kuisioner sebelum dan setelah kegiatan dilaksanakan. Berdasarkan respon positif dari warga yang diamati dari antusisme peserta saat pelaksanaan kegiatan, maka dapat disimpulkan bahwa kegiatan ini memiliki dampak positif untuk meningkatkan keterampilan peserta pelatihan.
Co-Authors Agustiawan, Deri Ajuk Sapar Anis Shofiyani Ari Widiyantoro Aritonang, Anthoni Batahan Chairil Anwar Chitra, Fara Endah Sayekti Gusrizal Gusrizal Irma Ramadhani Febriaty Jayuska, Afghani Kukuh Hernowo Mustofa Mustofa Nabila, Yaasinta Lafasha Prayitno, Dwi Imam Puji Ardiningsih Rahmayani, Ika Risa Nofiani Rudiyansyah Rudiyansyah Rudiyansyah, R. Sabirin Matsjeh Sitohang, Mikael Suryana, Angela Thamrin Usman Wardani, Fina Rika Wibowo, M. Agus Wibowo, Muhamad Agus Winda Rahmalia Wulandari, Adisti Riska Yuniar, Risa Zaharah, Titin Anita